Deck 10: Configuring DNS

Question 1

Who is responsible for the management of the Internet root servers?

A) ​Internet Assigned Numbers Authority (IANA)
B) ​Institute of Electrical and Electronics Engineers (IEEE)
C) ​American Registry for Internet Numbers (ARIN)
D) ​International Standards Organization (ISO)

Answer 1

A

Question 2

​In a zone's Properties dialog box,what option is unavailable under Dynamic updates for only standard zones?

A) ​The Nonsecure and secure option
B) ​The Secure only option
C) ​The None option
D) ​Both the Nonsecure and secure and Secure Only options

Answer 2

B

Question 3

The use of WINS forward lookup is enabled by default.​

Answer 3

False

Question 4

DNS servers maintain a database of information that contains zones.​

Question 5

The default setting for a ​secondary zone's refresh interval is how many minutes?

A) ​5 minutes
B) ​10 minutes
C) ​15 minutes
D) ​20 minutes

Question 6

What type of DNS record is used to contain an alias for another record,allowing for the use of different names for the same host?​

A) ​A record
B) ​AAAA record
C) ​CNAME record
D) ​Pointer record

Question 7

DNS recursion is enabled on Windows DNS servers by default.​

Question 8

What type of DNS query causes a DNS server to respond with the best information it currently has in its local database?​

A) ​Recursive query
B) ​Local query
C) ​Extended query
D) ​Iterative query

Question 9

​The MX record type is used to designate mail exchangers,or mail servers for e-mail.

Question 10

When data within a zone changes,what information in the SOA record changes to reflect that the zone information should be replicated?​

A) ​Serial number
B) ​Refresh interval
C) ​Retry interval
D) ​Minimum TTL

Question 11

A zone that is not integrated into Active Directory is referred to as a standard zone,and the zone data is stored in a text file.​

Question 12

Which of the following options can an administrator enable to improve DNS security?

A) ​Do not allow dynamic updates
B) ​Do not allow Active Directory Integrated Zones
C) ​Allow zone transfers
D) ​Notify

Question 13

Text files containing standard zone information in Windows utilize what file naming convention?​

A) ​​zone-name​.dns
B) ​​zone-name​.txt
C) ​​server(zone-name)​.txt
D) ​​server(zone-name)​.dns

Question 14

​Of the three different zone types,what type of zone contains a read/write master copy of all resource records for the zone?

A) ​Primary zone
B) ​Secondary zone
C) ​Stub zone
D) ​Glue zone

Question 15

​A valid reverse lookup zone consists of the network ID's octets in reverse order,with what at the end of the name?

A) ​.arpa
B) ​in-addr.arpa
C) rlz.arpa
D) ​in-addr.ptr

Question 16

The hosts file is contained within what directory in Windows?​

A) ​%systemroot%/System32
B) ​%systemroot%/drivers
C) ​%systemroot%/System32/drivers/etc
D) ​%systemroot%/dns/etc

Question 17

​When a dynamic DNS record is created,what is the TTL value used for?

A) To determine how many hops away the updating client is
B) ​To specify the time before the next update
C) ​To specify how long the record should remain in the DNS database
D) ​To determine how long it takes for a ping to reach the client and come back

Question 18

​Select the PowerShell cmdlet that can be used to create a new Active Directory integrated primary zone:

A) ​Install-DNSPrimaryZone
B) ​Add-DnsServerPrimaryZone
C) ​Add-ADPrimaryZone
D) ​Install-IADPzone

Question 19

The responsible person section of an SOA record contains what information?

A) ​The name or organization responsible for the zone
B) ​The username responsible for the zone
C) ​The SWIP account details for the zone
D) ​The e-mail address of the responsible person

Question 20

What command option for the dnscmd command lists all zones on the server?

A) ​/enumrecords
B) /enumzones
C) ​/info
D) ​/ipvalidate

Question 21

Why might an organization want a single DNS server to make all external queries?

Question 22

A ____________ contains PTR records that map IP addresses to names and is named after the IP network address of the computers whose records it contains.

Question 23

What DNS record type is used for an IPv6 host record?​

A) ​A
B) ​AAAA
C) ​MX
D) ​SRV

Question 24

___________ load balancing using DNS works by creating two A records with the same hostname,but different IP addresses,which point any queries for the hostname to multiple hosts running the same service.

Question 25

Although the hosts file is no longer used for localhost name resolution,what else can the hosts file be used for?

Question 26

On a server hosting secondary zones,how can an administrator request records from the entire zone?

Question 27

​What RFC defines the DNS resource record types?

A) ​RFC 1100
B) ​RFC 1183
C) ​RFC 1918
D) ​RFC 2311

Question 28

What is the difference between static and dynamic DNS records?

Question 29

A computer making a DNS query is known as a DNS client,or DNS ___________.

Question 30

.com,.net,and .edu​ are all examples of what level of the DNS naming hierarchy?

A) ​Top-level domain names
B) ​Second-level domain names
C) ​Subdomains
D) ​Stub domains
Enter the appropriate word(s)to complete the statement.

Question 31

What is a conditional forwarder used for?

Question 32

How can a master server be configured to make a secondary server request zone transfers immediately after a zone change?

Question 33

What does a NS record specify?

Question 34

Why might an administrator want to disable the recursive query functionality of a DNS server?

Question 35

How should an administrator test the functionality of DNS operation on a domain controller,as well as troubleshoot issues with DNS forwarders,delegation,dynamic updates,and record registration?​

A) ​Using DNS Manager
B) ​Using dcdiag /test:dns
C) ​Using dnscmd.exe
D) ​Using nslookup

Question 36

Computers can utilize _____________ to register or update their own DNS records,or DHCP can update DNS on behalf of the clients when the clients lease a new IP address.​

Question 37

How does the GlobalNames zone (GNZ)feature work?

Question 38

When DNS forwarders or conditional forwarders are configured,what order will a Windows DNS server use to attempt to resolve DNS queries?

Question 39

Which Windows command line utility below can be used to check for resource records on a server,verify delegations,verify resource records needed for AD replication,and perform e-mail connectivity tests?​

A) ​nslookup
B) ​dnslint
C) ​dig
D) ​dcdiag